RFID industrial reader-writer

Abstract

The utility model relates to the technical field of RFID (Radio Frequency Identification Device) equipment, in particular to an RFID industrial reader-writer, which comprises a shell in which a mainboard is arranged; a main control circuit, a power supply circuit, a radio frequency circuit and a signal processing circuit are arranged on the main board; the signal processing circuit comprises a USB circuit providing a USB interface, an RS485 circuit providing a 485 terminal, a TCP / IP network circuit providing an RJ45 interface and an RS232 circuit providing a serial interface. The USB interface, the 485 terminal, the RJ45 interface, the serial interface and a power supply interface provided by the power supply circuit extend out of the shell through a cable; and the radio frequency circuit comprises a radio frequency antenna attached to the upper surface of the inner side of the shell. The performance of the RFID industrial reader-writer is improved, the problem of low data transmission speed is solved, and the flexibility, compatibility and expandability of the system are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to RFID equipment technical field, concretely is a kind of RFID industry read-write device. BACKGROUND

[0002] RFID is called radio frequency identification technology in Chinese, and the full name in English is Radio Frequency IDentification (RFID). It is a kind of wireless communication technology. RFID system is a set of hardware equipment based on RFID technology, and has rich industrial uses.

[0003] RFID industry read-write device is used to transmit signal to activate tag, and read or write data in tag. The data interface generally used by the device is RS232 and RS485, which is used to connect with back-end computer and transmit data and control through the interface.

[0004] Although RS485 has the advantage of long transmission distance in the current RFID industry read-write device, its communication interface is single, and the data transmission speed is slow, so that the reading and writing data will last for a long time, and the efficiency is low. Therefore, in view of the above problems, we propose a kind of RFID industry read-write device to at least partially solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of RFID industry read-write device to at least partially solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of RFID industry read-write device, comprising: shell, mainboard is arranged in it;

[0008] The main control circuit is equipped on the mainboard, and power supply circuit, radio frequency circuit and signal processing circuit electrically connected to the main control circuit;

[0009] The signal processing circuit includes USB circuit providing USB interface, RS485 circuit providing 485 terminal, TCP / IP network circuit providing RJ45 interface and RS232 circuit providing serial interface;

[0010] The USB interface, 485 terminal, RJ45 interface, serial interface and power supply interface provided by the power supply circuit are extended out of the shell by cable arranged in the side of the shell;

[0011] The radio frequency circuit includes radio frequency antenna that is attached to the upper surface of the inner side of the shell.

[0012] Preferably, the shell comprises: a lower shell providing a containing cavity, and an upper cover;

[0013] The main board is arranged in the containing cavity, and the cable extends out of the shell from the side of the lower shell;

[0014] A waterproof ring is arranged between the lower shell and the upper cover;

[0015] A lamp plate is arranged around the top of the inner side of the upper cover, the lamp plate is electrically connected to the main board, the upper cover is provided with a lamp hole corresponding to the lamp plate, and a lens is arranged at the lamp hole.

[0016] Preferably, a circularly polarized antenna is further arranged in the containing cavity;

[0017] The circularly polarized antenna is electrically connected to the main board, the main board is abutted to the upper cover through a copper column, and the upper cover is connected to the lower shell through a screw;

[0018] A cable interface is arranged on the side of the lower shell, and the cable extends out of the shell through the cable interface.

[0019] Preferably, at least one reserved port is further arranged at one side of the cable interface, a detachable sealing cover is arranged at the reserved port, and a sealing gasket is further arranged at the reserved port and the sealing cover.

[0020] Preferably, the lens comprises a first lens arranged at a corner of the upper cover and a second lens arranged at an upper edge of the upper cover.

[0021] Preferably, the power supply circuit comprises an input circuit, a conversion circuit and a POE circuit;

[0022] The POE circuit and the input circuit are electrically connected to the conversion circuit as a power input end, and the conversion circuit is electrically connected to the main control circuit.

[0023] The conversion circuit comprises a first conversion circuit for converting 9-24VDC into 5VDC, and at least two groups of second conversion circuits for converting 5VDC into 3.3VDC.

[0024] The POE circuit and the input circuit are respectively electrically connected to the first conversion circuit and a power supply interface.

[0025] Preferably, the shell is made of aluminum casting.

[0026] Compared with the prior art, the shell has the beneficial effects that:

[0027] The utility model discloses a shell is provided with mainboard in it, is equipped with main control circuit on the mainboard, and power supply circuit, radio frequency circuit and signal processing circuit are electrically connected to the main control circuit, the signal processing circuit includes USB circuit providing USB interface, RS485 circuit providing 485 terminal, TCP IP network circuit providing RJ45 interface and RS232 circuit providing serial interface, the USB interface, 485 terminal, RJ45 interface, serial interface and the power supply interface provided by the power supply circuit extend out the shell outside through the cable setting in the lateral surface of the shell, the radio frequency circuit includes the radio frequency antenna that is attached to the inside upper surface of the shell, through increasing multiple high -speed and multifunctional interface, the performance of RFID industry reader -writer has been improved significantly, not only solves the problem of slow data transmission speed, but also enhances the flexibility, compatibility and scalability of system, effectively improves the overall efficiency and management convenience. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is an explosion structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model,

[0029] Figure 2 It is main control circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model,

[0030] Figure 3 It is indicator lamp circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model,

[0031] Figure 4 It is buzzer circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model,

[0032] Figure 5 It is first conversion circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model,

[0033] Figure 6 It is second conversion circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model, and three terminal voltage stabilizer is composed,

[0034] Figure 7 It is second conversion circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model, and power supply chip is composed,

[0035] Figure 8 It is POE circuit structure schematic view of RFID industry reader -writer provided for an embodiment of the utility model.

[0036] In the figure: 101, lower shell; 102, upper cover; 103, mainboard; 104, circularly polarized antenna; 105, lamp panel; 106, first lens; 107, second lens; 108, waterproof ring; 109, cable interface; 201, copper column; 202, screw; 203, sealing cover; 204, sealing ring. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0038] Please refer to Figure 1 In the embodiments of the utility model, an RFID industrial reader is provided, which comprises a shell, a mainboard 103 arranged in the shell, a main control circuit arranged on the mainboard 103, a power supply circuit, a radio frequency circuit and a signal processing circuit electrically connected to the main control circuit, a USB circuit providing a USB interface, an RS485 circuit providing a 485 terminal, a TCP / IP network circuit providing an RJ45 interface and an RS232 circuit providing a serial interface, wherein the USB interface, the 485 terminal, the RJ45 interface, the serial interface and a power supply interface provided by the power supply circuit are extended out of the shell through a cable arranged on the side of the shell, and the radio frequency circuit comprises a radio frequency antenna attached to the upper surface of the inner side of the shell.

[0039] In the embodiments, the slow data transmission speed and low efficiency caused by the single RS485 interface of the RFID industrial reader are effectively solved by adding various communication interfaces. Specifically, by adding the USB circuit and interface, since the USB interface has a faster data transmission rate than the RS485, the speed of data exchange is significantly improved, the read-write operation time is shortened, and the overall efficiency is improved; through Ethernet connection, the RFID reader can realize high-speed data exchange with the network, not only improving the transmission speed, but also facilitating remote monitoring and management, enhancing the flexibility and scalability of the system; in addition, although the transmission speed is not as fast as that of the USB and TCP / IP, the RS232 interface provides compatibility for devices that require serial communication, ensuring connection with old systems or specific requirement devices. Through high-speed data transmission of the USB and TCP / IP, the waiting time of read-write operation is reduced, and the processing capacity and working efficiency of the RFID reader are improved. The provision of various communication interfaces enables the reader to adapt to different communication requirements and environments, and enhances the compatibility with various devices and systems.

[0040] As an example, as shown in Figure 2 The above-mentioned main control circuit is mainly composed of an MCU chip, and the MCU chip can preferably use an MCU chip with a model number of STM32F103RCT6 for controlling various modules.

[0041] As shown in Figure 1 The shell includes a lower shell 101 providing a containing cavity, and an upper cover 102; the mainboard 103 is arranged in the containing cavity, and the cable extends out of the shell from the side of the lower shell 101; a waterproof ring 108 is arranged between the lower shell 101 and the upper cover 102; a lamp plate 105 is arranged around the top of the inner side of the upper cover 102, and the lamp plate 105 is electrically connected to the mainboard 103; the upper cover 102 is provided with a lamp hole corresponding to the lamp plate 105; a lens is arranged at the position of the lamp hole. Among them, a plurality of LED lamps are arranged on the lamp plate 105, and the circuit is as shown in Figure 3 The MCU chip controls the circuit of the LED lamp on the lamp plate 105. The waterproof ring 108 improves the waterproof performance of the equipment, which is suitable for humid or outdoor environments, and enhances the durability and reliability. The combination of the lamp plate and the lens provides clear visual indication, which is convenient for remote monitoring and on-site operation confirmation.

[0042] As a more preferred embodiment, a circularly polarized antenna 104 is further arranged in the containing cavity; the circularly polarized antenna 104 is electrically connected to the mainboard 103; the mainboard 103 is abutted to the upper cover 102 through a copper column 201; the upper cover 102 is connected to the lower shell 101 through a screw 202; a cable interface 109 is arranged on the side of the lower shell 101, and the cable extends out of the shell through the cable interface 109.

[0043] The circularly polarized antenna 104 is an RFID high-gain circularly polarized antenna, and its working principle is that the MCU on the mainboard 103 controls the RFID radio frequency circuit to obtain a radio frequency signal, the radio frequency signal is amplified and diffused by the RFID radio frequency antenna of the circularly polarized antenna 104, the RFID electronic tag receives the signal and exchanges data with the reader through the air protocol, obtains the data of the RFID electronic tag, and then the main control chip MCU on the mainboard 103 makes corresponding actions, such as controlling the buzzer to sound, or transmitting data through the external interface.

[0044] As a preferred embodiment, at least one reserved port is arranged at one side of the cable interface 109; the reserved port is provided with a detachable sealing cover 203, and the sealing cover 203 and the reserved port are further provided with a sealing gasket 204. The above-mentioned reserved port design facilitates future functional expansion or interface requirement changes, and when expansion is not required, the sealing cover 203 and the sealing gasket 204 ensure the sealing and waterproof performance of the device.

[0045] As a preferred embodiment, the lens includes a first lens 106 arranged at the four corners of the upper cover and a second lens 107 arranged at the upper edge of the upper cover. The lenses at different positions provide multi-angle visual feedback, enhancing the intuitiveness and convenience of operation.

[0046] As a preferred embodiment, the power supply circuit includes an input circuit, a conversion circuit and a POE circuit; as shown in Figures 5 to 8 , the POE circuit and the input circuit are electrically connected to the conversion circuit as power input terminals; the conversion circuit is electrically connected to the main control circuit; the conversion circuit includes a first conversion circuit for converting 9-24VDC to 5VDC, and at least two groups of second conversion circuits for converting 5VDC to 3.3VDC; the POE circuit and the input circuit are respectively electrically connected to the first conversion circuit and the power supply interface of the RJ45 interface.

[0047] Through the integration of the above-mentioned POE circuit, power supply through Ethernet is supported, wiring is simplified, and installation cost is reduced. The conversion of 9VDC-24VDC to 5VDC and then to 3.3VDC ensures stable and reliable power supply, adapting to different device requirements.

[0048] As an example, as shown in the above Figure 5 , the first conversion circuit mainly consists of a first power supply chip U6, and an inductor L3 and a plurality of electrolytic capacitors C38, C39, C41 and C42 are connected at the output end of the first power supply chip U6, so that the output 5V DC is more stable, and the input end can accept a wide voltage input of 9-24V, which can prevent voltage instability at the input end. As shown in Figure 6 and Figure 7 , the second conversion circuit can be composed of a three-terminal voltage regulator U21 or a second power supply chip U3, which is used to convert 5V to 3.3V for power supply, and can be configured separately for each unit, so that each module can obtain separate power supply. As shown in Figure 8 , the POE circuit is electrically connected to the input end of the power supply chip U4 through two rectifier bridges D54 and D55, and the output end of the power supply chip is electrically connected to the input end of the first conversion circuit through a diode D4.

[0049] As shown in Figure 4 The buzzer circuit further comprises a transistor Q6, the collector of which is electrically connected to a 3.3V power supply position, the emitter of which is electrically connected to one end of a speaker, and the other end of the speaker is grounded to form a loop; a buzzer control loop is formed from the 3.3V position to the collector of the transistor Q6, to the base of the transistor Q6, and then to a current-limiting resistor R31 to the MCU chip, and the transistor Q6 is controlled according to the signal of the MCU chip, and the corresponding sound is output through the buzzer; specifically, when the RFID tag is read by the reader / writer, the base of the transistor Q6 is controlled by the MCU to be high or low, so as to control the buzzer to emit sound.

[0050] As a preferred embodiment, the shell is made of aluminum casting, and the aluminum casting shell of the RFID industrial reader / writer makes the RFID industrial reader / writer have a high protection level; the lower shell 101 and the upper cover 102 cooperate with the waterproof ring 108, so that the protection level can reach at least IP65 high protection level.

[0051] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An RFID industrial reader, characterized by, The application relates to a shell, which is internally provided with a mainboard. The mainboard is provided with a main control circuit, a power supply circuit, a radio frequency circuit and a signal processing circuit which are electrically connected to the main control circuit. The signal processing circuit comprises a USB circuit providing a USB interface, an RS485 circuit providing a 485 terminal, a TCP / IP network circuit providing an RJ45 interface and an RS232 circuit providing a serial interface. The USB interface, the 485 terminal, the RJ45 interface, the serial interface and a power supply interface provided by the power supply circuit are extended outside the shell through cables arranged on the side of the shell. The radio frequency circuit comprises a radio frequency antenna which is attached to the upper surface of the inner side of the shell. The power supply circuit comprises an input circuit, a conversion circuit and a POE circuit, and the POE circuit supports power supply through the RJ45 interface. The shell is made of aluminum casting and comprises a lower shell and an upper cover which provide a containing cavity, and a waterproof ring is arranged between the lower shell and the upper cover. The mainboard is arranged in the containing cavity, and the cables are extended outside the shell from the side of the lower shell.

2. The RFID industrial reader of claim 1, wherein, A lamp plate is arranged around the top of the inner side of the upper cover, the lamp plate is electrically connected to the mainboard, the upper cover is provided with a lamp hole corresponding to the lamp plate, and a lens is arranged at the lamp hole position. A circularly polarized antenna is further arranged in the containing cavity.

3. The RFID industrial reader of claim 2, wherein, The circularly polarized antenna is electrically connected to the mainboard, the mainboard is abutted to the upper cover through a copper column, and the upper cover is connected to the lower shell through screws. A cable interface is arranged on the side of the lower shell, and the cables are extended outside the shell through the cable interface. At least one reserved port is further arranged at one side of the cable interface, a detachable sealing cover is arranged at the reserved port, and a sealing gasket is further arranged at the position of the sealing cover and the reserved port.

4. The RFID industrial reader of claim 3, wherein, The lens comprises first lenses arranged at the positions of four corners of the upper cover and second lenses arranged at the positions of upper edges of the upper cover.

5. The RFID industrial reader of claim 2, wherein, The POE circuit and the input circuit are electrically connected to the conversion circuit as power input ends, and the conversion circuit is electrically connected to the main control circuit.

6. The RFID industrial reader of claim 1, wherein, The conversion circuit comprises a first conversion circuit for converting 9-24VDC into 5VDC and at least two groups of second conversion circuits for converting 5VDC into 3.3VDC. The POE circuit and the input circuit are respectively electrically connected to the first conversion circuit and the RJ45 interface and the power supply interface. ​

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